Merge pull request #2406 from nicolas-fort/T5681

T5681: Firewall,Nat and Nat66: simplified and standarize interface matcher

1 files changed, 75 insertions, 0 deletions

diff --git a/src/migration-scripts/firewall/11-to-12 b/src/migration-scripts/firewall/11-to-12
new file mode 100755
index 000000000..51b2fa860
--- /dev/null
+++ b/src/migration-scripts/firewall/11-to-12
@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2023 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# T5681: Firewall re-writing. Simplify cli when mathcing interface
+# From
+    # set firewall ... rule <rule> [inbound-interface | outboubd-interface] interface-name <iface>
+    # set firewall ... rule <rule> [inbound-interface | outboubd-interface] interface-group <iface_group>
+# To
+    # set firewall ... rule <rule> [inbound-interface | outboubd-interface] name <iface>
+    # set firewall ... rule <rule> [inbound-interface | outboubd-interface] group <iface_group>
+
+import re
+
+from sys import argv
+from sys import exit
+
+from vyos.configtree import ConfigTree
+from vyos.ifconfig import Section
+
+if len(argv) < 2:
+    print("Must specify file name!")
+    exit(1)
+
+file_name = argv[1]
+
+with open(file_name, 'r') as f:
+    config_file = f.read()
+
+base = ['firewall']
+config = ConfigTree(config_file)
+
+if not config.exists(base):
+    # Nothing to do
+    exit(0)
+
+## FORT
+## Migration from base chains
+#if config.exists(base + ['interface', iface, direction]):
+for family in ['ipv4', 'ipv6']:
+    if config.exists(base + [family]):
+        for hook in ['forward', 'input', 'output', 'name']:
+            if config.exists(base + [family, hook]):
+                for priority in config.list_nodes(base + [family, hook]):
+                    if config.exists(base + [family, hook, priority, 'rule']):
+                        for rule in config.list_nodes(base + [family, hook, priority, 'rule']):
+                            for direction in ['inbound-interface', 'outbound-interface']:
+                                if config.exists(base + [family, hook, priority, 'rule', rule, direction]):
+                                    if config.exists(base + [family, hook, priority, 'rule', rule, direction, 'interface-name']):
+                                        iface = config.return_value(base + [family, hook, priority, 'rule', rule, direction, 'interface-name'])
+                                        config.set(base + [family, hook, priority, 'rule', rule, direction, 'name'], value=iface)
+                                        config.delete(base + [family, hook, priority, 'rule', rule, direction, 'interface-name'])
+                                    elif config.exists(base + [family, hook, priority, 'rule', rule, direction, 'interface-group']):
+                                        group = config.return_value(base + [family, hook, priority, 'rule', rule, direction, 'interface-group'])
+                                        config.set(base + [family, hook, priority, 'rule', rule, direction, 'group'], value=group)
+                                        config.delete(base + [family, hook, priority, 'rule', rule, direction, 'interface-group'])
+
+try:
+    with open(file_name, 'w') as f:
+        f.write(config.to_string())
+except OSError as e:
+    print("Failed to save the modified config: {}".format(e))
+    exit(1)
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